Furnace.



J. R. & R. J. CROZIER.

FURNACE.

APPLICATION FILED JUNE 6. 19m.

1,295,275. Patented Feb.25, 1919.

3 SHEETSSHEET I.

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FURNACE.

\ APPLICATION FILED IUNEB l9l6. 1,295,275.

Patented Feb. 25, 1919.

3 SHEETS-SHEET 2.

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Wit n mow J. R. & R. I. CROZIER.

FURNACE.

APPLICATIDN FILED JUNE 6.1916- 1295275. Patented Feb. 25, 1919.

3 SHEETSSHEET 3- J-llflrazz'er .R. Jr 6702387 JAMES ROSS cnozrnn ANDROBERT J. GROZIER, or ELMORE, 01-110.

FURNACE.

Specification of Letters Patent. Patented Feb. .25,

Application filed June 6, 1916. Serial No. 102,012.

To all whom it may concern:

Be it known that we, JAMES R. CRozIER and ROBERT J. CRozIER, citizens ofthe United States, residing at Elmore in the county of Ottawa and Stateof Ohio, have invented new and useful Improvements in Furnaces,

of which the following is a specification.

This invention relates to furnaces, and it has particular reference to afurnace of the hot air type which is equipped with a fire pot in whichwater may be heated for the purpose of circulating the same through aradiating system.

The invention has for its object to produce a furnace in .which a stackor series of drums are supported on the fire pot for the circulation ofthe products of combustion, said drums being open at the ends thereoffor the passage of air which may thus be heated.

A further object of the invention is to simplify and improve theconstruction and arrangement of those parts of the furnace casing whichcooperate with the drums to produce the space for the circulation of theproducts of combustion.

With these and other ends in view which will readily appear as thenature of the invention 1s better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claim.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaim may be resorted to when desired.

In the drawings,

Figure 1 is a side elevation of a furnace constructed in accordance withthe invention.

Fig. 2 is a front end view of the same.

Fig. 3 is a rear end elevation. 5

Fig. i is a vertical sectional view taken on the line 4.4 in Fig. 2.

Fig. 5 is a transverse sectional view taken on the line 55 in Fig. 1.

Fig. 6 is a perspective view showing the two parts or members of one ofthe drums separated from each other.

Fig. 7 is a top plan view of a furnace with the top plate or cap plateremoved.

Fig. 8 is a perspective view of the fire pot showing the supportingplate connected therewith.

Corresponding parts in the several fig ures are denoted by likecharacters of reference.

The fire pot 15 which is supported on the ash pit casing 16 is madehollow to form a water compartment 17 having at each side thereof aninlet 18 and an outlet 19 which may be connected with a circulatingsystem. By this construction of the fire pot the water for a hot watersystem may be heated very effectively and inexpensively;

The fire pot is constructed with a recess 20 constituting a fuel intake,andthe top of the fire pot supports a plate 21 which, if desired, may bein the nature of a flange which is integral therewith, said plate orflange serving as a support for the superposed hot air drums. Each ofsaid drums is composed of two parts or members B, C. The members B and Care of substantially similar construction, but the members C areinverted upon the members B. Each of said members is composed of asubstantially flat plate 22, the front and rear ends of which are curvedto produce flanges 23, the flanges of the member B being projectedupwardly, while the flanges of the members C are projected downwardly,as will be readily understood by reference to the drawings, the meetingedges of the flanges being, moreover, provided with grooves and tongues24, 25' so that tight joints will be formed between the members whenthey are assembled. The side edges of the members B and C are pro videdwith vertical flanges 26 which extend downwardly with respect to theplates 22 of the members B and upwardly with respect to the plates 22-of the members C.

When the two members B and C are assembled together they will virtuallyconstitute an elongated tubular drum, the ends of which are providedwith lateral flanges, the top and bottom edges of which are straight andparallel, the end edges of said flanges being, likewise, straight andsubstantially at right angles to the top and bottom edges. Any desirednumber of these drums may be used, the bottom drum being supported onthe plate or flange 21 resting on the fire pot, and the remaining onesbeing superposed on the bottom one. In the drawings three such drumshave been shown, but the number may obviously be varied. The furnacefront con sists of a. plate 27 which is suitably connected with thefront ends of the drums by means of bolts or the like, the manner ofconnecting the parts together differing in no essential way from thatwhich is usually employed in the construction of stoves and furnaces, itbeing also understood that tongue and groove joints are to be employedwherever needed and that care is to be taken to make theconstructionsmoke proof. The front plate 27 has a door 28 through whichaccess may be had to the inter-spaces between the tubular portions ofthe drums in order that such spaces may be conveniently cleaned. Anotherdoor 29 is provided through which access may be had to -the fire pot forthe purpose offeeding' the fire. Still another door 30 provides accessto the. ash

pit, said door being constructed with a draft opening obstructed by adamper 31. The fire pot is provided with a shaking grate 32, the shankof which 38 may be reached through a door 34 generally known as theclinker door.-

Connected with the drums at the rear ends thereof is the back plate 35which affords a tight closure for the rearward ends of the interspacesbetween the tubular portions of the drums. A. cap plate 36 is alsoprovided, the same having a smoke outlet 37 The intermediate unit of thedrum has the rounded ends of its horizon-tal plates spaced from thefront as well as from the back plate, the outer drum unitshavi-ng theirforward ends contacting with the front plate. On the intermediate andtop units of the drum are arranged damp'ers 89 provided with operatingrods 4-0 which extend through the front plate. The upper drum unit hasarranged upon the upper face thereof ribs 38 that serve as stops for thedamper.

Assuming that the dampers are in their open position, the products ofcombustion from the fire box will be permitted to pass direct betweenthe back 3-5 and the rear ends of the rounded portions of the drumunits, this being the path of least resistance. hen

the damper for the intermediate drum unit is closed, as illustrated inFig. at of the drawings, the products of combustion will be compelled totake a circuitous path, traveling first to the rear of the lower drumunit, then between the lower and intermediate drum units, around thefront of the intermediate drum unit, over the top thereof, beneath thebottom of the uppermost drum unit and thence to the smoke exit. The flowof the products of combustion from the fire pot .to the smoke outlet maybe regulated by adj usting the upper damper 89.

Having thus described the invention, what is claimed as new, is 1 Theherein described construction of furnace, comprising an ash pi-t casing,a fire vpot resting thereon, a horizontal plate formed on the outer edgeat the top of the fire box and extending beyond the sides and endsthereof, a front plate and a back plate secured to the opposite edges ofsaid horizontal plate, a drum resting on the horizontal plate andconnected to the front and back plates, said drum comprisinga pluralityof superimposed units each comprising-two sec tions, each of saidsections embodyii'rg hori zon tal'ly disposed plates having their endsrounded toward each other and having a tongue and groove connection attheir said ends, and side plates extending'fron'i the in her edges ofthe said horizontal plates and the rounded ends thereof, the contactingedges of the side plates of the respective units of the drum havingtongue and groove 7 engagement, a cap plat-e resting upon the uppermostdrum unit and secured thereto, an integrally formed smoke outlet on saidcap plate, and dampers between certain of the units of the drum and theback plate of the furnace. V p

In testimony whereof we ai'fix our signatures in presence of twowitnesses.

JAMES ROSS CROZIER. ROBT. J. CR'OZIER.

Witnesses:

CHARLES K. SMoYnR,

Copies of this patentmay be obtained for five cents each, by addressingthe Gom'missio'ner of Eaten-ts,

Washington, D. G. s

